scripts/functions: svn retrieval first tries the mirror for tarballs

The svn download helper looks for the local tarballs dir to see if it
can find a pre-downloaded tarball, and if it does not find it, does
the actual fetch to upstream via svn.

In the process, it does not even try to get a tarball from the local
mirror, which can be useful if the mirror has been pre-populated
manually (or with a previously downloaded tree).

Fake a tarball get with the standard tarball-download helper, but
without specifying any upstream URL, which makes the helper directly
try the LAN mirror.

Of course, if no mirror is specified, no URL wil be available, and
the standard svn retrieval will kick in.

Reported-by: ANDY KENNEDY <ANDY.KENNEDY@adtran.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

scripts/functions: if no upstream URL is given, silently ignore that

When retrieving tarballs from upstream, if no URL was given, do not
fail; simmply ignore that fact.

This will be used later when the SVN helper will call the standard
helper to try the LAN mirror before trying svn.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

libc: remove unneeded glibc/eglibc common functions

do_libc_locales_extract() and do_libc_locales() in glibc-eglibc.sh-common have
been overridden for both glibc and eglibc, so they can now be removed, which
this patch does.

Signed-off-by: "Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>

libc/glibc: add partial support for locales

This patch adds partial support for glibc locales.

For now, it only generates the appropriate locales when the host and the target
have the same endianness and uint32_t alignment.

Signed-off-by: "Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>

libc/eglibc: add support for locales

This patch adds support for eglibc locales.

Signed-off-by: "Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>

libc: create an infrastructure to build and install the libc locales

This patch adds a common glibc/eglibc infrastructure to build and install the
libc locales.

Signed-off-by: "Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>

1.12: update version to 1.12.0+hg

Tagging release 1.12.0

1.12: create maintenance branch, update version to 1.12.0

samples: update before release

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>